64% is the change from 275 to 451
Calculation steps:
[( 451 - 275 ) ÷ 275] x 100 = 64%
Formula
Percentage change = [(451 - 275) / 275] x 100
Subtract the new number by the original number
451 - 275 = 176
176 ÷ 275 = 0.64
0.64 x 100 = 64%
Example